Remove/install heat exchanger housing

AR83.70-W-5934B

4.3.10

MODEL 375.4 with BODY 375.860 with CODE (HH1) "Eberspächer D5W S" warm water auxiliary heater

MODEL 940, 942, 943, 944 with BODY 944.890 with CODE (HH1) "Eberspächer D5W S" warm water auxiliary heater

W83.70-1398-02

1 Heat exchanger housing

W83.70-1396-11

1 Heat exchanger housing

2 Heat exchanger

3 O-ring

W83.70-1397-01

1 Heat exchanger housing

2 Heat exchanger

4 Shoulder

5 Groove

 	Remove/install
1	Remove heater unit		AR83.70-W-5302M
2	Remove temperature and overheating sensor		AR83.70-W-5687A
3	Remove burner tube		AR83.70-W-5760A
4	Pry heat exchanger (2) out of heat exchanger housing (1)	 To pry the heat exchanger (2) out, insert a screwdriver into the overheating sensor hole.
5	Pull heat exchanger (2) out of heat exchanger housing (1)	 Installation: Replace O-ring (3) and grease using Vaseline	*BR00.45-Z-1015-06A
		Clean off any deposits on the sealing surface in the heat exchanger housing (1). Do not damage sealing surface.
		Line up groove (5) in heat exchanger (2) with the bar (4) in the heat exchanger housing (1).
6	Install in the reverse order

Repair materials

Number	Designation	Order number
BR00.45-Z-1015-06A	Vaseline	Karl Käppler GmbH & Co. KG Liebknechtstr. 48 70565 Stuttgart Germany Tel. +49 711 7868-481 Fax +49 711 7868-489 www.karl-kaeppler.de